Service difficulty report · Frame · Boeing 7377H4

Difficulty date
January 27, 2023
Submitted
March 6, 2023
Operation
Air carrier
Aircraft
N955WN
Make and model
Boeing 7377H4
Aircraft serial
36671
Aircraft time
38,739 hours, 23,607 cycles
Part
Frame
Condition
Cracked
Location
Zn 200 Fus Top
Stage of operation
IN
How discovered
9
Nature of condition
O
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

CRACK ON FRAME OF FWD. PASSENGER COMPARTMENT BS 312 STRINGER 6L.<[01] UPDATED MEASUREMENT TABLE;[02] FOUND SRM 53-10-07-2R-1 TO BE APPLICABLE FOR BS 312 FRAME REPAIR;[03] TRIMMED DAMAGE 1.9'X1' ON BS 312 FRAME BETWEEN STR 6L AND STR 7L PER SRM 53-10-07-2R-1STEP 4-C;[04] VERIFIED ITEMS 2;3 CORRECTIVE ACTIONS.;[05] REQUIRE A ( HFEC ) ON THE EDGE OF THE CUTOUT AREA; OPEN HOLE (HFEC ) IN THE REPAIR AREA AND DO A DVI. PER B737-700 SRM 53-10-07-2R-1 REPAIR 1 REV 78-10.;[06] NDT HFEC INSPECTED EDGE PER 737 NDTM PART 6; 51-00-00; PROC 23; NO CRACKS NOTED. EQUIP ID IS000450 DUE 02/23<BR>NDT HFEC INSPECTED HOLES PER 737 NDTM PART 6; 51-00-00; PROC 16; NO CRACKS NOTED. EQUIP ID IS000450 DUE 02/23 AND ATS1411 DUE 07/23;[07] ACCOMPLISHED DVI; NO DEFECTS NOTED PER SRM 53-10-07-2R-1 REPAIR 1.;[08] RECEIVED REPAIR PART [ANGLE] OUTSIDE SERVICES PO #904488-SWA;[09] VERIFIED CORRECTIVE ACTION 8.;[10] LOCATED HOLES ; TRIMMED ; AND APPLIED CHEMICAL CONVERSION COATING PER MM 53-10-07-2R-1STEP 4 H-L FIG 203; OK TO PRIME;[11] VERIFIED CORRECTIVE ACTION 10.;[12] APPLIED TWO LAYERS OF PRIMER TO REPAIR ANGLE AND INITIAL PARTS PER MM 53-10-07-2R-1STEP 4-M AND OK TO INSTALL;[13] VERIFIED CORRECTIVE ACTION 12.;[14] INSTALLED REPARE ANGLE PER MM 53-10-07-2R-1STEP 4 N-P;

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